"You can't underestimate anybody," Antonio Gates was saying on Friday, after the final practice of the regular season.

"Everyone in the NFL has talent," he said later.

"They're here because they have the ability to play football," he added.

They are familiar comments from Gates, who someday could be elected to the Pro Football Hall of Fame because he maintains such a high level of consistency, regardless the opponent.

The Chiefs may view Sunday's game against the Chargers as a tuneup for the playoffs. Oddsmakers seem to believe the Chiefs (11-4) will rest or limit several of their starters, having made the Chargers (8-7) a heavy favorite from 9 to 10.5 points.

Leave it to Gates to shoot down that line of thinking.

Gates, citing his experience in training camps, says the Chiefs backups could be even more dangerous than the starters. And his rationale makes some sense.

"Going against the first team, sometimes it's a little easier. Sometimes, when you bring the second team out, they're all jacked up and fired up," he said.

Chiefs coach Andy Reid, for his part, has noticed that Gates, 33, continues to outmaneuver defensive backs and linebackers. Film study of last Sunday's first Chargers drive showed the Raiders tried to guard Gates with just one defender. After Gates reeled off three catches for 42 yards, Oakland shaded an extra defender toward him, freeing up other Chargers playmakers.

"Gates is doing a great job," Reid said. "He’s back healthy and moving around. Looks like his foot is good. He’s moving around very, very well. He and Philip (Rivers) have a great relationship and connection there. There’s a lot of trust between them, and you can see it."

Mathews practices

Ryan Mathews, his left ankle heavily taped, practiced for the first time this week. The Chargers listed him as probable for Sunday's game. Eddie Royal (toe) is questionable. Both Mathews and Sean Lissemore (shoulder) were limited participants. Shareece Wright (foot) was a full participant for the first time this week.

Two Chiefs out

The Chiefs ruled out two starters: receiver Dwayne Bowe (concussion) and edge rusher Tamba Hali (knee). Bowe is second on the team in receptions (57) and touchdown catches (5). Hali has 11 sacks, tied with Justin Houston for team honors.